tcm: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/tcm - from package: tcm

You may install the required package with command apt-get install {package}
Error in other languages:
tcm: bevel nie gevind nie
tcm: comandă negăsită
tcm: comando não encontrado
tcm: commande introuvable
tcm: command not found
tcm: käsku ei ole
tcm: không tìm thấy lệnh
tcm: komanda nerasta
tcm: Kommando nicht gefunden.
tcm: kommandot finns inte
tcm: komut yok
tcm: nie znaleziono polecenia
tcm: níor aimsíodh an t-ordú
tcm: no se encontró la orden
tcm: no s'ha trobat l'ordre
tcm: opdracht niet gevonden
tcm: parancs nem található
tcm: perintah tidak ditemukan
tcm: príkaz nenájdený
tcm: příkaz nenalezen
tcm: команда не найдена
tcm: командата не е открита
tcm: 命令找不到
tcm: コマンドが見つかりません